Zobrazeno 1 - 10
of 41
pro vyhledávání: '"Nils T. Basse"'
Autor:
Nils T. Basse
Publikováno v:
Water, Vol 15, Iss 18, p 3234 (2023)
We present a mixing length-based algebraic turbulence model calibrated to pipe flow; the main purpose of the model is to capture the increasing turbulence production-to-dissipation ratio observed in connection with the high Reynolds number transition
Externí odkaz:
https://doaj.org/article/e00eb2449b3b402ca8fe5de69f0e7fba
Autor:
Nils T. Basse
Publikováno v:
Fluids, Vol 5, Iss 2, p 56 (2020)
Flow-based optimization of products and devices is an immature field compared to corresponding topology optimization based on solid mechanics [...]
Externí odkaz:
https://doaj.org/article/fabd986b7e454c83894612a01874a0d9
Autor:
Nils T. Basse
Publikováno v:
Fluids, Vol 4, Iss 4, p 180 (2019)
We study streamwise turbulence intensity definitions using smooth- and rough-wall pipe flow measurements made in the Princeton Superpipe. Scaling of turbulence intensity with the bulk (and friction) Reynolds number is provided for the definitions. Th
Externí odkaz:
https://doaj.org/article/f959d0f902d04f10be8d00f655446b85
Autor:
Nils T. Basse
Publikováno v:
Fluids, Vol 2, Iss 2, p 30 (2017)
Turbulence intensity profiles are compared for smooth- and rough-wall pipe flow measurements made in the Princeton Superpipe. The profile development in the transition from hydraulically smooth to fully rough flow displays a propagating sequence from
Externí odkaz:
https://doaj.org/article/37c02ee51640436abe9ba01ff04b8d3c
Autor:
Nils T. Basse
Publikováno v:
Meteorology and Atmospheric Physics. 132:401-411
Aviation turbulence is modelled as an interaction between an aircraft and a vortex tube. The vortex tube can have an arbitrary orientation/offset with respect to the aircraft. We compare modelling the aircraft (i) as a point and (ii) having a finite
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6338fc11f9c64e5f2c20aa66d090fd06
https://doi.org/10.1007/s00703-019-00699-0
https://doi.org/10.1007/s00703-019-00699-0
Autor:
Nils T. Basse
Publikováno v:
Physics of Fluids. 34:075128
We have characterized a transition of turbulence intensity (TI) scaling for friction Reynolds numbers [Formula: see text] in the companion papers [Basse, “Scaling of global properties of fluctuating and mean streamwise velocities in pipe flow: Char
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b124043a5e3bc3e38ccdb7881883917e
https://doi.org/10.1063/5.0101547
https://doi.org/10.1063/5.0101547
Autor:
Nils T. Basse
We extend the procedure outlined in [Basse, "Scaling of global properties of fluctuating and mean streamwise velocities in pipe flow: Characterization of a high Reynolds number transition region," Phys. Fluids Vol. 33, 065127 (2021)] to study global,
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::bd614d05797fa31619462caffe9a8382
Publikováno v:
Simurda, M, Duggen, L, Basse, N T & Lassen, B 2018, ' Fourier collocation approach with mesh refinement method for simulating transit-time ultrasonic flowmeters under multiphase flow conditions ', I E E E Transactions on Ultrasonics, Ferroelectrics and Frequency Control, vol. 65, no. 2, pp. 244-257 . https://doi.org/10.1109/TUFFC.2017.2775283
A numerical model for transit-time ultrasonic flowmeters operating under multiphase flow conditions previously presented by us is extended by mesh refinement and grid point redistribution. The method solves modified first-order stress-velocity equati
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::46d7fe9d37b9fec2c2ebb4dca48fcf73
https://doi.org/10.1109/tuffc.2017.2775283
https://doi.org/10.1109/tuffc.2017.2775283
Autor:
Nils T. Basse
Publikováno v:
Physics of Fluids. 33:065127
We study the global, i.e. radially averaged, high Reynolds number (asymptotic) scaling of streamwise turbulence intensity squared defined as ${I^2=\overline{u^2}/U^2}$, where $u$ and $U$ are the fluctuating and mean velocities, respectively (overbar
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f772c1d548eee9e7554aa60615d21b91
https://doi.org/10.1063/5.0054769
https://doi.org/10.1063/5.0054769
Autor:
Nils T. Basse
Publikováno v:
Flow Measurement and Instrumentation. 52:40-52
Coriolis flowmeters experience measurement errors due to both single- and two-phase flow. For two-phase flow, severe damping may occur, which leads to a (temporary) inability of the flowmeter to operate. The dominating part of the damping is caused b
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e553f4f225a1da3b2fa9f78dfcfcbd54
https://doi.org/10.1016/j.flowmeasinst.2016.09.005
https://doi.org/10.1016/j.flowmeasinst.2016.09.005